[BUG]: Failed to write meta-data: Expected DATA response, got: Unrecognized command stage

[martin-petzold]

What happened?

OS (Imager): MacOS 15.7.4
Pi: CM5 on Waveshark Nano Base Board (A) with eMMC (32GB)

I'm trying to use the 2.0.7 integrated Rpiboot/Fastboot support in order to flash my Pi CM5 on Waveshark Nano Base Board (A) for the first time.

I have connected a USB cable from my MacBook (USB-C) to the Waveshark Nano Base Board (A) USB-A port. Then I hold the BOOT button and power the board via USB-C cable. The LED turns red.

When I then have Rpiboot/Fastboot support enabled, it shows the device connected via USB. I then select all options and start flashing. Installing the bootloader seems to work, also flashing proceeds until 100%. However, then I get the error "Failed to write meta-data: Expected DATA response, got: Unrecognized command stage"

Interestingly, when I re-power the board it boots and seems to work. However, it does not connect to WiFi and using an USB->Ethernet adapter connected to the USB-A port it finds the device, but does not allow SSH access. It seems the configuration was not written to the OS.

Version

2.0.7 (Default)

What host operating system were you using?

macOS

Host OS Version

15.7.4

Selected OS

Raspberry Pi OS Trixie (64bit)

Which Raspberry Pi Device are you using?

Raspberry Pi 5, 500, and Compute Modules 5

What kind of storage device are you using?

Integrated eMMC

OS Customisation

• Yes, I was using OS Customisation when the bug occurred.

Relevant log output

Failed to write meta-data: Expected DATA response, got: Unrecognized command stage

[tdewey-rpi]

Thanks for the report, @martin-petzold

This is gated on a new release of rpi-sb-provisioner, and I'll update this issue once that's processed.

[martin-petzold]

Thanks, @tdewey-rpi . Any work-around using rpi-imager?

How could I achieve my goal with this setup?

[phattmatt]

Hi @martin-petzold,

Instead of using the experimental Rpiboot/Fastboot support in Raspberry Pi Imager you can resort to the standalone project:

https://github.com/raspberrypi/usbboot

Which should hopefully get you imaging your CM5.

For reference:

https://www.raspberrypi.com/documentation/computers/compute-module.html#flash-compute-module-emmc

[martin-petzold]

Okay, the work-around is currently:

1. Run new rpi_imager with debug option and via USB connection (hold boot button)
2. Run usbboot (I do it from Linux)
3. Run new rpi_imager again, this time via mounted USB device (then it will write the configuration)